<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>JS的CRUD</title>
    <style>
        #test {
            background-color: black;
            color: white;
            width: 500px;
            height: 500px;
        }
    </style>
</head>
<body>
    <div id="test">我是描述</div>
    <script src="js/index.js">
    </script>
    <script type="text/javascript">
//        alert(0);
    </script>
</body>
</html>